There was once a time when ‘Star Wars’ was just another odd science fiction caper from a weird director with an ill-advised beard. This week’s arrival of 500,000 archive clips on YouTube from British Movietone and the Associated Press has revealed a lot of things – including a weird dog training regime and a demo of the first modern synth – but for geeks, this clip about how ‘Star Wars’ was received in Britain, when it was released in 1977, is the best so...